Study on gas holdup characteristics of micro-bubble countercurrent contacting flotation column

• Autorzy: Han Jikang , Wang Weizhi , Li Ran

Identyfikatory

DOI

10.37190/ppmp/124232

• Języki publikacji: EN

Abstrakty

EN

In order to explore the gas holdup distribution of the microbubble countercurrent contact flotation column in the hematite column cationic reverse flotation process, respectively using conductance method and pressure drop method for air and water as experimental medium characteristics research of flotation column, the research group carries on the gas holdup, examines the aeration quantity, the fill medium and cation collector alkyl polyamine ether (An amine collector―GE609 which consists of four elements: carbon, hydrogen, oxygen and nitrogen)within the column on the influence of the axial and radial gas holdup. The results show that the axial gas holdup from the bottom of the column to the top of the column increases with the increase of height in the range of 0.050.07dm3/s. The radial distribution of gas holdup generally shows the distribution law of “intermediate high, low on both sides”. After the filling medium is added into the column, the radial gas holdup is evenly distributed compared with the empty column, and the gas holdup is increased. Due to the high foaming performance of GE-609, the gas holdup in the column can be increased by changing the amount of aeration and the concentration of the reagent, which can exceed 60% at the maximum. Like other alcohol foaming agents, as time passes, the effect of GE-609 weakens and the gas holdup in the column gradually decreases. The addition of quantitative HCl can improve the foaming performance of GE-609, and the gas holdup in the column is significantly improved and the stability is enhanced.

Słowa kluczowe

EN

column flotation; conductance method; pressure drop method; gas holdup; GE-609

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2020
• Tom: Vol. 56, iss. 4
• Strony: 665--675
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Han Jikang

• College of Mine engineering, North China University of Science and Technology, Tangshan 063210, China
• Mining Development and Safety Technology Key Lab of Hebei Province, Tangshan 063210, China

autor

Wang Weizhi

• College of Mine engineering, North China University of Science and Technology, Tangshan 063210, China
• Mining Development and Safety Technology Key Lab of Hebei Province, Tangshan 063210, China

autor

Li Ran

• North China University of Science and Technology, Tangshan 063210, China

Bibliografia

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